Torre de Cristal ( Spanish for Crystal Tower) is a skyscraper in the Cuatro Torres Business Area in Madrid ( Spain), completed in 2008. With a final height of 249.5 metres, it ranks as the second tallest building in the country after neighbouring Torre Caja Madrid. In April 2007, its structure surpassed the height of neighbouring Torre Espacio, for a while becoming the tallest building and structure in Spain. It was designed by César Pelli and it was built by Dragados .